Hmmm, I read a lot of comics as a kid. I read a lot period throughout my childhood uptil the age of 30-32 I guess. And that stopped because of broadband internet and especially Youtube taking over my life. But if I were to look back and see which were my favourite books:

Huckelberry Finn

Gulliver’s Travels

Robinson Crusoe

I am not sure that you can qualify them as children’s books but I read the illustrated versions of these books by the age of 10 and I loved them all.